CA125 Blood Test: Ovarian Cancer Risk

CA125 is a protein in your blood. When your level of CA125 is raised, it can indicate a risk of ovarian cancer. However, a blood test result with raised levels of CA125 is not a diagnosis and will need to be further investigated.


Why CA125?

Common reasons for this blood test are:

  • If your doctor has recommended this test alongside any potential symptoms of ovarian cancer
  • To help detect ovarian cancer without other symptoms after the menopause.

Your blood test

Our phlebotomy-trained professionals will take a blood sample from you. This sample will be analysed in the UK by our authorised partners, TDL. By booking this blood test, you agree for us to share your personal information with TDL in order to process your test. We’ll make sure you consent to this at your appointment too.

Frequently Asked Questions

No, we will send you the results and recommend that you share these with your GP or fertility provider.

It is not unusual for some bleeding to occur under the skin following your blood test and sometimes this can extend a little further around the puncture site.  If this causes you concern, check with your practice nurse. 

Sometimes we cannot get a blood sample from you. This can be for many reasons, such as not being hydrated enough, feeling cold or having another blood test recently. We will always offer you another appointment so we can try again.

Visit our FAQs page for any further questions you may have.